The first version of Dreamweaver was developed by Macromedia and available for Windows and Mac in 1998. Macromedia were acquired by Adobe Systems in 2005. Dreamweaver has since replaced Adobe GoLive as Adobe's main web site design application. Adobe Dreamweaver offers a WYSIWYG (What You See Is What You Get) design interface that requires no knowledge of coding to use, along with the ability to directly edit code: supporting HTML, XHTML, CSS, XML, JavaScript, Ajax, PHP, ASP, etc.